/*
* $Id: PortletActionRedirectResult.java 651946 2008-04-27 13:41:38Z apetrelli $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.struts2.portlet.result;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.portlet.PortletMode;
import org.apache.struts2.dispatcher.ServletActionRedirectResult;
import org.apache.struts2.dispatcher.mapper.ActionMapper;
import org.apache.struts2.dispatcher.mapper.ActionMapping;
import org.apache.struts2.portlet.PortletActionConstants;
import org.apache.struts2.views.util.UrlHelper;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.config.entities.ResultConfig;
import com.opensymphony.xwork2.inject.Inject;
/**
*
* Portlet modification of the {@link ServletActionRedirectResult}.
*
* <!-- START SNIPPET: description -->
*
* This result uses the {@link ActionMapper} provided by the
* {@link ActionMapperFactory} to instruct the render phase to invoke the
* specified action and (optional) namespace. This is better than the
* {@link PortletResult} because it does not require you to encode the URL
* patterns processed by the {@link ActionMapper} in to your struts.xml
* configuration files. This means you can change your URL patterns at any point
* and your application will still work. It is strongly recommended that if you
* are redirecting to another action, you use this result rather than the
* standard redirect result.
*
* See examples below for an example of how request parameters could be passed
* in.
*
* <!-- END SNIPPET: description -->
*
* <b>This result type takes the following parameters:</b>
*
* <!-- START SNIPPET: params -->
*
* <ul>
*
* <li><b>actionName (default)</b> - the name of the action that will be
* redirect to</li>
*
* <li><b>namespace</b> - used to determine which namespace the action is in
* that we're redirecting to . If namespace is null, this defaults to the
* current namespace</li>
*
* </ul>
*
* <!-- END SNIPPET: params -->
*
* <b>Example:</b>
*
* <pre>
* <!-- START SNIPPET: example -->
* <package name="public" extends="struts-default">
* <action name="login" class="...">
* <!-- Redirect to another namespace -->
* <result type="redirectAction">
* <param name="actionName">dashboard</param>
* <param name="namespace">/secure</param>
* </result>
* </action>
* </package>
*
* <package name="secure" extends="struts-default" namespace="/secure">
* <-- Redirect to an action in the same namespace -->
* <action name="dashboard" class="...">
* <result>dashboard.jsp</result>
* <result name="error" type="redirectAction">error</result>
* </action>
*
* <action name="error" class="...">
* <result>error.jsp</result>
* </action>
* </package>
*
* <package name="passingRequestParameters" extends="struts-default" namespace="/passingRequestParameters">
* <-- Pass parameters (reportType, width and height) -->
* <!--
* The redirectAction url generated will be :
* /genReport/generateReport.action?reportType=pie&width=100&height=100
* -->
* <action name="gatherReportInfo" class="...">
* <result name="showReportResult" type="redirectAction">
* <param name="actionName">generateReport</param>
* <param name="namespace">/genReport</param>
* <param name="reportType">pie</param>
* <param name="width">100</param>
* <param name="height">100</param>
* </result>
* </action>
* </package>
*
*
* <!-- END SNIPPET: example -->
* </pre>
*
* @see ActionMapper
*/
public class PortletActionRedirectResult extends PortletResult {
private static final long serialVersionUID = -7627388936683562557L;
/** The default parameter */
public static final String DEFAULT_PARAM = "actionName";
protected String actionName;
protected String namespace;
protected String method;
private Map<String, String> requestParameters = new LinkedHashMap<String, String>();
private ActionMapper actionMapper;
public PortletActionRedirectResult() {
super();
}
public PortletActionRedirectResult(String actionName) {
this(null, actionName, null);
}
public PortletActionRedirectResult(String actionName, String method) {
this(null, actionName, method);
}
public PortletActionRedirectResult(String namespace, String actionName, String method) {
super(null);
this.namespace = namespace;
this.actionName = actionName;
this.method = method;
}
protected List<String> prohibitedResultParam = Arrays.asList(new String[] { DEFAULT_PARAM, "namespace", "method",
"encode", "parse", "location", "prependServletContext" });
@Inject
public void setActionMapper(ActionMapper actionMapper) {
this.actionMapper = actionMapper;
}
/**
* @see com.opensymphony.xwork2.Result#execute(com.opensymphony.xwork2.ActionInvocation)
*/
public void execute(ActionInvocation invocation) throws Exception {
actionName = conditionalParse(actionName, invocation);
if (portletMode != null) {
Map<PortletMode, String> namespaceMap = (Map<PortletMode, String>) invocation.getInvocationContext().get(
PortletActionConstants.MODE_NAMESPACE_MAP);
namespace = namespaceMap.get(portletMode);
}
if (namespace == null) {
namespace = invocation.getProxy().getNamespace();
} else {
namespace = conditionalParse(namespace, invocation);
}
if (method == null) {
method = "";
} else {
method = conditionalParse(method, invocation);
}
String resultCode = invocation.getResultCode();
if (resultCode != null) {
ResultConfig resultConfig = invocation.getProxy().getConfig().getResults().get(resultCode);
Map resultConfigParams = resultConfig.getParams();
for (Iterator i = resultConfigParams.entrySet().iterator(); i.hasNext();) {
Map.Entry e = (Map.Entry) i.next();
if (!prohibitedResultParam.contains(e.getKey())) {
requestParameters.put(e.getKey().toString(), e.getValue() == null ? "" : conditionalParse(e
.getValue().toString(), invocation));
}
}
}
StringBuffer tmpLocation = new StringBuffer(actionMapper.getUriFromActionMapping(new ActionMapping(actionName,
namespace, method, null)));
UrlHelper.buildParametersString(requestParameters, tmpLocation, "&");
setLocation(tmpLocation.toString());
super.execute(invocation);
}
/**
* Sets the action name
*
* @param actionName
* The name
*/
public void setActionName(String actionName) {
this.actionName = actionName;
}
/**
* Sets the namespace
*
* @param namespace
* The namespace
*/
public void setNamespace(String namespace) {
this.namespace = namespace;
}
/**
* Sets the method
*
* @param method
* The method
*/
public void setMethod(String method) {
this.method = method;
}
/**
* Adds a request parameter to be added to the redirect url
*
* @param key
* The parameter name
* @param value
* The parameter value
*/
public PortletActionRedirectResult addParameter(String key, Object value) {
requestParameters.put(key, String.valueOf(value));
return this;
}
}